Model No.:S25 Ultra. - Android 14.0. Others: Android OS 14.0 System. Dual card dual standby, card slot does not distinguish between the main and the deputy, supporting the worlds 50 major communication carrier networks.
Samsung Galaxy S23 Ultra 5G. Factory Unlocked works will All GSM+CDMA Carriers. AT&T Unlocked works with GSM Network such as Verizon Unlocked works with CDMA Network such as AT&T/ Cricket / Easy Go.
Choices are network locked, unlocked or WiFi Only. For the unlocked option, it is possible you may receive a phone that your carrier does not accept on their network. For sale is ONE random smartphone.